
/*!

 @Title: Layui
 @Description：经典模块化前端框架
 @Site: www.layui.com
 @Author: 贤心
 @License：MIT

 */

;
! function(win) {
	"use strict";

	var doc = document,
		config = {
			modules: {} //记录模块物理路径
			,
			status: {} //记录模块加载状态
			,
			timeout: 10 //符合规范的模块请求最长等待秒数
				,
			event: {} //记录模块自定义事件
		}

		,
		Layui = function() {
			this.v = '2.4.4'; //版本号
		}

		//获取layui所在目录
		,
		getPath = function() {
			var jsPath = doc.currentScript ? doc.currentScript.src : function() {
				var js = doc.scripts,
					last = js.length - 1,
					src;
				for(var i = last; i > 0; i--) {
					if(js[i].readyState === 'interactive') {
						src = js[i].src;
						break;
					}
				}
				return src || js[last].src;
			}();
			return jsPath.substring(0, jsPath.lastIndexOf('/') + 1);
		}()

		//异常提示
		,
		error = function(msg) {
			win.console && console.error && console.error('Layui hint: ' + msg);
		}

		,
		isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]'

		//内置模块
		,
		modules = {
			layer: 'modules/layer' //弹层
				,
			laydate: 'modules/laydate' //日期
				,
			laypage: 'modules/laypage' //分页
				,
			laytpl: 'modules/laytpl' //模板引擎
				,
			layim: 'modules/layim' //web通讯
				,
			layedit: 'modules/layedit' //富文本编辑器
				,
			form: 'modules/form' //表单集
				,
			upload: 'modules/upload' //上传
				,
			tree: 'modules/tree' //树结构
				,
			table: 'modules/table' //表格
				,
			element: 'modules/element' //常用元素操作
				,
			rate: 'modules/rate' //评分组件
				,
			colorpicker: 'modules/colorpicker' //颜色选择器
				,
			slider: 'modules/slider' //滑块
				,
			carousel: 'modules/carousel' //轮播
				,
			flow: 'modules/flow' //流加载
				,
			util: 'modules/util' //工具块
				,
			code: 'modules/code' //代码修饰器
				,
			jquery: 'modules/jquery' //DOM库（第三方）

				,
			mobile: 'modules/mobile' //移动大模块 | 若当前为开发目录，则为移动模块入口，否则为移动模块集合
				,
			'layui.all': '../layui.all' //PC模块合并版
		};

	//记录基础数据
	Layui.prototype.cache = config;

	//定义模块
	Layui.prototype.define = function(deps, factory) {
		var that = this,
			type = typeof deps === 'function',
			callback = function() {
				var setApp = function(app, exports) {
					layui[app] = exports;
					config.status[app] = true;
				};
				typeof factory === 'function' && factory(function(app, exports) {
					setApp(app, exports);
					config.callback[app] = function() {
						factory(setApp);
					}
				});
				return this;
			};

		type && (
			factory = deps,
			deps = []
		);

		if(layui['layui.all'] || (!layui['layui.all'] && layui['layui.mobile'])) {
			return callback.call(that);
		}

		that.use(deps, callback);
		return that;
	};

	//使用特定模块
	Layui.prototype.use = function(apps, callback, exports) {
		var that = this,
			dir = config.dir = config.dir ? config.dir : getPath,
			head = doc.getElementsByTagName('head')[0];

		apps = typeof apps === 'string' ? [apps] : apps;

		//如果页面已经存在jQuery1.7+库且所定义的模块依赖jQuery，则不加载内部jquery模块
		if(window.jQuery && jQuery.fn.on) {
			that.each(apps, function(index, item) {
				if(item === 'jquery') {
					apps.splice(index, 1);
				}
			});
			layui.jquery = layui.$ = jQuery;
		}

		var item = apps[0],
			timeout = 0;
		exports = exports || [];

		//静态资源host
		config.host = config.host || (dir.match(/\/\/([\s\S]+?)\//) || ['//' + location.host + '/'])[0];

		//加载完毕
		function onScriptLoad(e, url) {
			var readyRegExp = navigator.platform === 'PLaySTATION 3' ? /^complete$/ : /^(complete|loaded)$/
			if(e.type === 'load' || (readyRegExp.test((e.currentTarget || e.srcElement).readyState))) {
				config.modules[item] = url;
				head.removeChild(node);
				(function poll() {
					if(++timeout > config.timeout * 1000 / 4) {
						return error(item + ' is not a valid module');
					};
					config.status[item] ? onCallback() : setTimeout(poll, 4);
				}());
			}
		}

		//回调
		function onCallback() {
			exports.push(layui[item]);
			apps.length > 1 ?
				that.use(apps.slice(1), callback, exports) :
				(typeof callback === 'function' && callback.apply(layui, exports));
		}

		//如果使用了 layui.all.js
		if(apps.length === 0 ||
			(layui['layui.all'] && modules[item]) ||
			(!layui['layui.all'] && layui['layui.mobile'] && modules[item])
		) {
			return onCallback(), that;
		}

		//首次加载模块
		if(!config.modules[item]) {
			var node = doc.createElement('script')

				//如果是内置模块，则按照 dir 参数拼接模块路径
				//如果是扩展模块，则判断模块路径值是否为 {/} 开头，
				//如果路径值是 {/} 开头，则模块路径即为后面紧跟的字符。
				//否则，则按照 base 参数拼接模块路径
				,
				url = (modules[item] ? (dir + 'lay/') :
					(/^\{\/\}/.test(that.modules[item]) ? '' : (config.base || ''))
				) + (that.modules[item] || item) + '.js';

			url = url.replace(/^\{\/\}/, '');

			node.async = true;
			node.charset = 'utf-8';
			node.src = url + function() {
				var version = config.version === true ?
					(config.v || (new Date()).getTime()) :
					(config.version || '');
				return version ? ('?v=' + version) : '';
			}();

			head.appendChild(node);

			if(node.attachEvent && !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) && !isOpera) {
				node.attachEvent('onreadystatechange', function(e) {
					onScriptLoad(e, url);
				});
			} else {
				node.addEventListener('load', function(e) {
					onScriptLoad(e, url);
				}, false);
			}

			config.modules[item] = url;
		} else { //缓存
			(function poll() {
				if(++timeout > config.timeout * 1000 / 4) {
					return error(item + ' is not a valid module');
				};
				(typeof config.modules[item] === 'string' && config.status[item]) ?
				onCallback(): setTimeout(poll, 4);
			}());
		}

		return that;
	};

	//获取节点的style属性值
	Layui.prototype.getStyle = function(node, name) {
		var style = node.currentStyle ? node.currentStyle : win.getComputedStyle(node, null);
		return style[style.getPropertyValue ? 'getPropertyValue' : 'getAttribute'](name);
	};

	//css外部加载器
	Layui.prototype.link = function(href, fn, cssname) {
		var that = this,
			link = doc.createElement('link'),
			head = doc.getElementsByTagName('head')[0];

		if(typeof fn === 'string') cssname = fn;

		var app = (cssname || href).replace(/\.|\//g, ''),
			id = link.id = 'layuicss-' + app,
			timeout = 0;

		link.rel = 'stylesheet';
		link.href = href + (config.debug ? '?v=' + new Date().getTime() : '');
		link.media = 'all';

		if(!doc.getElementById(id)) {
			head.appendChild(link);
		}

		if(typeof fn !== 'function') return that;

		//轮询css是否加载完毕
		(function poll() {
			if(++timeout > config.timeout * 1000 / 100) {
				return error(href + ' timeout');
			};
			parseInt(that.getStyle(doc.getElementById(id), 'width')) === 1989 ? function() {
				fn();
			}() : setTimeout(poll, 100);
		}());

		return that;
	};

	//存储模块的回调
	config.callback = {};

	//重新执行模块的工厂函数
	Layui.prototype.factory = function(modName) {
		if(layui[modName]) {
			return typeof config.callback[modName] === 'function' ?
				config.callback[modName] :
				null;
		}
	};

	//css内部加载器
	Layui.prototype.addcss = function(firename, fn, cssname) {
		return layui.link(config.dir + 'css/' + firename, fn, cssname);
	};

	//图片预加载
	Layui.prototype.img = function(url, callback, error) {
		var img = new Image();
		img.src = url;
		if(img.complete) {
			return callback(img);
		}
		img.onload = function() {
			img.onload = null;
			typeof callback === 'function' && callback(img);
		};
		img.onerror = function(e) {
			img.onerror = null;
			typeof error === 'function' && error(e);
		};
	};

	//全局配置
	Layui.prototype.config = function(options) {
		options = options || {};
		for(var key in options) {
			config[key] = options[key];
		}
		return this;
	};

	//记录全部模块
	Layui.prototype.modules = function() {
		var clone = {};
		for(var o in modules) {
			clone[o] = modules[o];
		}
		return clone;
	}();

	//拓展模块
	Layui.prototype.extend = function(options) {
		var that = this;

		//验证模块是否被占用
		options = options || {};
		for(var o in options) {
			if(that[o] || that.modules[o]) {
				error('\u6A21\u5757\u540D ' + o + ' \u5DF2\u88AB\u5360\u7528');
			} else {
				that.modules[o] = options[o];
			}
		}

		return that;
	};

	//路由解析
	Layui.prototype.router = function(hash) {
		var that = this,
			hash = hash || location.hash,
			data = {
				path: [],
				search: {},
				hash: (hash.match(/[^#](#.*$)/) || [])[1] || ''
			};

		if(!/^#\//.test(hash)) return data; //禁止非路由规范
		hash = hash.replace(/^#\//, '');
		data.href = '/' + hash;
		hash = hash.replace(/([^#])(#.*$)/, '$1').split('/') || [];

		//提取Hash结构
		that.each(hash, function(index, item) {
			/^\w+=/.test(item) ? function() {
				item = item.split('=');
				data.search[item[0]] = item[1];
			}() : data.path.push(item);
		});

		return data;
	};

	//本地持久性存储
	Layui.prototype.data = function(table, settings, storage) {
		table = table || 'layui';
		storage = storage || localStorage;

		if(!win.JSON || !win.JSON.parse) return;

		//如果settings为null，则删除表
		if(settings === null) {
			return delete storage[table];
		}

		settings = typeof settings === 'object' ?
			settings :
			{
				key: settings
			};

		try {
			var data = JSON.parse(storage[table]);
		} catch(e) {
			var data = {};
		}

		if('value' in settings) data[settings.key] = settings.value;
		if(settings.remove) delete data[settings.key];
		storage[table] = JSON.stringify(data);

		return settings.key ? data[settings.key] : data;
	};

	//本地会话性存储
	Layui.prototype.sessionData = function(table, settings) {
		return this.data(table, settings, sessionStorage);
	}

	//设备信息
	Layui.prototype.device = function(key) {
		var agent = navigator.userAgent.toLowerCase()

			//获取版本号
			,
			getVersion = function(label) {
				var exp = new RegExp(label + '/([^\\s\\_\\-]+)');
				label = (agent.match(exp) || [])[1];
				return label || false;
			}

			//返回结果集
			,
			result = {
				os: function() { //底层操作系统
					if(/windows/.test(agent)) {
						return 'windows';
					} else if(/linux/.test(agent)) {
						return 'linux';
					} else if(/iphone|ipod|ipad|ios/.test(agent)) {
						return 'ios';
					} else if(/mac/.test(agent)) {
						return 'mac';
					}
				}(),
				ie: function() { //ie版本
					return(!!win.ActiveXObject || "ActiveXObject" in win) ? (
						(agent.match(/msie\s(\d+)/) || [])[1] || '11' //由于ie11并没有msie的标识
					) : false;
				}(),
				weixin: getVersion('micromessenger') //是否微信
			};

		//任意的key
		if(key && !result[key]) {
			result[key] = getVersion(key);
		}

		//移动设备
		result.android = /android/.test(agent);
		result.ios = result.os === 'ios';

		return result;
	};

	//提示
	Layui.prototype.hint = function() {
		return {
			error: error
		}
	};

	//遍历
	Layui.prototype.each = function(obj, fn) {
		var key, that = this;
		if(typeof fn !== 'function') return that;
		obj = obj || [];
		if(obj.constructor === Object) {
			for(key in obj) {
				if(fn.call(obj[key], key, obj[key])) break;
			}
		} else {
			for(key = 0; key < obj.length; key++) {
				if(fn.call(obj[key], key, obj[key])) break;
			}
		}
		return that;
	};

	//将数组中的对象按其某个成员排序
	Layui.prototype.sort = function(obj, key, desc) {
		var clone = JSON.parse(
			JSON.stringify(obj || [])
		);

		if(!key) return clone;

		//如果是数字，按大小排序，如果是非数字，按字典序排序
		clone.sort(function(o1, o2) {
			var isNum = /^-?\d+$/,
				v1 = o1[key],
				v2 = o2[key];

			if(isNum.test(v1)) v1 = parseFloat(v1);
			if(isNum.test(v2)) v2 = parseFloat(v2);

			if(v1 && !v2) {
				return 1;
			} else if(!v1 && v2) {
				return -1;
			}

			if(v1 > v2) {
				return 1;
			} else if(v1 < v2) {
				return -1;
			} else {
				return 0;
			}
		});

		desc && clone.reverse(); //倒序
		return clone;
	};

	//阻止事件冒泡
	Layui.prototype.stope = function(thisEvent) {
		thisEvent = thisEvent || win.event;
		try {
			thisEvent.stopPropagation()
		} catch(e) {
			thisEvent.cancelBubble = true;
		}
	};

	//自定义模块事件
	Layui.prototype.onevent = function(modName, events, callback) {
		if(typeof modName !== 'string' ||
			typeof callback !== 'function') return this;

		return Layui.event(modName, events, null, callback);
	};

	//执行自定义模块事件
	Layui.prototype.event = Layui.event = function(modName, events, params, fn) {
		var that = this,
			result = null,
			filter = events.match(/\((.*)\)$/) || [] //提取事件过滤器字符结构，如：select(xxx)
			,
			eventName = (modName + '.' + events).replace(filter[0], '') //获取事件名称，如：form.select
			,
			filterName = filter[1] || '' //获取过滤器名称,，如：xxx
			,
			callback = function(_, item) {
				var res = item && item.call(that, params);
				res === false && result === null && (result = false);
			};

		//添加事件
		if(fn) {
			config.event[eventName] = config.event[eventName] || {};

			//这里不再对多次事件监听做支持，避免更多麻烦
			//config.event[eventName][filterName] ? config.event[eventName][filterName].push(fn) : 
			config.event[eventName][filterName] = [fn];
			return this;
		}

		//执行事件回调
		layui.each(config.event[eventName], function(key, item) {
			//执行当前模块的全部事件
			if(filterName === '{*}') {
				layui.each(item, callback);
				return;
			}

			//执行指定事件
			key === '' && layui.each(item, callback);
			key === filterName && layui.each(item, callback);
		});

		return result;
	};

	win.layui = new Layui();

}(window);